Although hypo- and hyper- don’t conform to your system (they have opposite meanings but similar sounds), -oid and -ic do, and it causes confusion and misunderstanding.
That is terribly confusing! I’d almost say (without knowing anything about the field) that having individual words for those concepts seems silly; just have a word for “well-melting” and then use numbers and other words from there.
The eutectic and eutectoid points are quite similar ideas: both are about a homogeneous material that changes into a mixture of two solid phases as it cools. However, eutectic goes from a liquid to a pair of solid phases (liquid iron into the austenite and cementite phases in the example above), while eutectoid goes from one solid phase to two (austenite into ferrite and cementite).
If you wanted to use the same word for both points, then you’d need some other way of disambiguating them. Maybe the “austenite easy transition point” and “liquid easy transition point”?
I don’t think that giving similar-meaning words similar labels is a good idea. In one class, I had to struggle to distinguish between:
hypoeutectoid (“less than well-melting-ish”, such as steel with 0.022%-0.76% carbon)
hypereutectoid (“more than well-melting-ish”, such as steel with 0.76%-2.14% carbon)
hypoeutectic (“less than well-melting”, such as cast iron with 2.14%-4.30% carbon)
hypereutectic (“more than well-melting”, such as cast iron with >4.30% carbon)
(see https://en.wikipedia.org/wiki/Eutectic_system#Eutectoid for more details)
Although hypo- and hyper- don’t conform to your system (they have opposite meanings but similar sounds), -oid and -ic do, and it causes confusion and misunderstanding.
That is terribly confusing! I’d almost say (without knowing anything about the field) that having individual words for those concepts seems silly; just have a word for “well-melting” and then use numbers and other words from there.
The eutectic and eutectoid points are quite similar ideas: both are about a homogeneous material that changes into a mixture of two solid phases as it cools. However, eutectic goes from a liquid to a pair of solid phases (liquid iron into the austenite and cementite phases in the example above), while eutectoid goes from one solid phase to two (austenite into ferrite and cementite).
If you wanted to use the same word for both points, then you’d need some other way of disambiguating them. Maybe the “austenite easy transition point” and “liquid easy transition point”?